Random review:
“I'm more excited than a banana boat full of monkeys on steroids! My grandchildren will absolutely love it. Tux Paint is made for ages 3-12 and 54. ... I can't wait to share this with everyone I know.”
— Dennis V. DiGennaro, January 2008

Known Issues (v.0.9.15)

Tux Paint versions: 0.9.15, 0.9.15b, 0.9.15-2
(November 2005)

A bug in the underlying font libraries was discovered after
releasing 0.9.15. 0.9.15b (0.9.15-1 and 0.9.15-2 for Windows) works
around the problem. Download a
newer version.

Windows

Tux Paint reboots my system;

Fullscreen mode causes monitor synchronization problems;

Mouse or stylus does not work properly in fullscreen

Tux Paint uses DirectX by default, but many systems ship with
buggy versions (even new PCs). Microsoft "windib" drivers can be
used as an alternative, and appears to fix all of these problems.
See the windib setup
documentation for instructions. Note: Future versions of
Tux Paint will use
"windib" by default, to avoid these issues, as we receive no benefit
from using DirectX.

There are errors unZIPping the ZIP-file version of Tux Paint

The original 0.9.15 ZIP-file builds of Tux Paint 0.9.15 for Windows
were not compatible with older systems.
Download 0.9.15-2,
which works with older ZIP tools.

Starting with version 0.9.15, Tux Paint stores the user's images
in their "Application Data" folder. (This makes Tux Paint
act more like other software for Windows.) However, the documentation
was not updated. Where this folder is, exactly, may depend on the
version of Windows, and the locale (language) that Windows is
configured with. On an English Windows XP system, for example,
the folder is: C:\Documents and
Settings\(user name)\Application
Data\TuxPaint\saved\ (where user name is the user's
log-in name on the system).

Mac OS X

Nothing happens when Tux Paint is double-clicked

The original 0.9.15 build of Tux Paint 0.9.15 was not compatible
with Apple Mac OS X 10.2.8. We are in the process of fixing this.
In the meantime, you can download 0.9.14 (from October 2005)
from
our
FTP site.

The Stamps download file appears as an Excel or Filemaker spreadsheet
or macro

This is apparently a problem with some browsers on the Mac
(notably, Internet Explorer). Simply renaming the file
so that it ends in ".dmg" appears to work around this problem.
(Apple's Safari browser does not appear to have this problem.)

Pictures are printed sideways and cut off in Tux Paint

For the moment, use the Mac OS X printer dialog
(which can be accessed in Tux Paint by holding the [Option/Alt]
key while clicking the "Print" button) to adjust the 'Layout' from
portrait to landscape. You may also need to adjust the the 'Scale'.

The 'Scale' value in the print dialog cannot be changed

This is a major bug in Tux Paint 0.9.15 (and presumably
earlier). For the time being, you can take the following steps to
adjust the scale:

Open Apple's TextEdit (or a similar application)

Type your preferred scale into a new text document (e.g., "80%")

Select the text with the mouse and copy it to the clipboard
(using Edit->Copy or [Command]+[C])

Return to the printer dialog in Tux Paint and select the
current 'Scale' value

Hold [Control] and click the 'Scale' field (you may right-click
it if you have more than one button on your mouse)

Select 'Paste' from the menu that appears

Tux Paint is not listed in Applications when setting
"Parental Controls"

Tux Paint Config inadvertently used the same unique ID as
Tux Paint on Mac OS X. This will be fixed in an upcoming release.
In the meantime, you can fix Tux Paint Config:

Hold [Control] and click the "Tux Paint Config" icon.

Select "Show Package Contents" from the menu that appears.

A new Finder window will appear containing a folder labelled
"Contents." Double-click that folder.

Double-click the file "Info.plist" to open it in the Property List
Editor tool.

Expand the "Root" option and double-click the Value for
"CFBundleIdentifier".

Change the value from "com.newbreedsoftware.tuxpaint"
to "com.newbreedsoftware.tuxpaintconfig".

Linux

Gnome Panel locks up when adding Tux Paint to the top panel

The panel is trying to use Tux Paint's scalable (SVG) icon,
and a bug in "libart" causes it to crash when using that icon.
Try removing the file
"/usr/share/icons/hicolor/scalable/apps/tuxpaint.svg"
(or change line 125 of that file so that "3.7787101e+16" is "0").